I installed the new Seblod v 3.4.0 and I am testing new features from changelog.
One thing is quite strange - I have a multilanguage setup, and I am trying column headers, heading variation. I have the strings set up in language overrides, and one thing striked at first glance. I have test fields 1, 2, 3. and the appropriate COM_CCK_TEST_FIELD_1, 2 and 3 set up in language override files.
When used without Heading Variation, strings are displayed ok, but when displayed with Heading Variation, strings seams to be translated twice. I suppose Test Field 1 gets translated into COM_CCK_TEST_FIELD_1 and from there into Campo Test 1 (for Italian), but that gets translated once more into COM_CCK_CAMPO_TEST_1. I think that there is no need for double translation, and that this might be a bug :)